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Help CenterDuran Wolff Buffer Flask, Vacuum Buffer Flask, Vacuum Reaction Flask, Flat Flange Cover and Its Accessories
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Duran Woulff Buffer Bottle, Vacuum Buffer Bottle, Vacuum Reaction Bottle, Flat Flange Cover and Its Accessories
Manufacturer: DWK Life Science
Brand: Duran
Products: Woulff Bottle, Vacuum Reaction Bottle, etc.
Origin: Germany
Duran Group is a global leading manufacturer of borosilicate glass. Borosilicate glass was invented by Mr. Otto Schott in 1887, and the DURAN® trademark was registered in 1938. Duran Group has a complete industrial chain from glass raw material melting to glass forming and processing, and has production bases in Germany, the UK and Croatia.
In 2017, Duran Group, together with Wheaton Industries and Kimble Chase, formed DWK Life Science. The three major laboratory glassware brands, Duran®, Wheaton® and Kimble®, provide more perfect products and services for your laboratory. Since then, the Schott Duran® logo will be replaced by the Duran® logo, and the product quality will not change.
Duran® Woulff Bottle, Vacuum Buffer Bottle
● Made of borosilicate glass 3.3, with 3 standard-sized ground glass joints for connecting gas pipes and vacuum pumps.
● Suitable for use under vacuum due to its wall thickness and special geometry.
● Durable white printed markings fired on.
Product List:
| Item Number | Product Name | Ground Glass Joint Size |
Diameter | Packaging |
| 247094403 | 500ml Woulff Vacuum Bottle |
19/26 |
87mm |
1 piece/box |
| 247095408 | 1000ml Woulff Vacuum Bottle |
24/29 |
113mm |
1 piece/box |
| 247096301 | 2000ml Woulff Vacuum Bottle |
29/32 |
135mm |
1 piece/box |
| 247097306 | 5000ml Wolf Vacuum Bottle |
34/35 |
185mm |
1 piece/box |
Duran® Wolf Bottle, Vacuum Buffer Bottle Woulff Bottle
● Made of borosilicate glass 3.3, with 3 standard-sized ground joints for connecting gas pipes and vacuum pumps, and an additional inlet and outlet at the bottom of the bottle.
● Suitable for use under vacuum due to its wall thickness and special geometry.
● Durable white printed marks made by firing.
Product List:
| Item Number | Product Name | Top Ground Joint | Bottom Ground Joint | Diameter | Packaging |
| 247104401 | 500ml Wolf Vacuum Bottle, Four Ports |
19/26 |
19/26 |
87mm |
1 piece/box |
| 247105406 | 1000ml Wolf Vacuum Bottle, Four Ports | 24/29 |
19/26 | 113mm |
1 piece/box |
| 247106308 | 2000ml Wolf Vacuum Bottle, Four Ports | 29/32 |
19/26 | 135mm |
1 piece/box |
| 247107304 | 5000ml Wolf Vacuum Bottle, Four Ports |
34/35 |
34/35 | 185mm |
1 piece/box |
Duran® Flat Flange Vacuum Reaction Vessel
● Made of borosilicate glass 3.3, used as a reaction vessel under special pressure or/and high temperature.
● The bottle mouth has a flat flange interface with a groove where an O-ring can be placed.
● Those below 1000ml are cylindrical; those above 2000ml are cylindrical in the lower part and concave in the upper part.
● Due to the wall thickness and geometric shape, it has pressure and vacuum resistance performance.
● A durable white printed logo made by firing.
Product list:
| Product number | Product description | Total volume | Dimensions (mm) | Pressure resistance at 250℃ |
Packaging |
| 243902408 | 100ml vacuum reaction flask, DN60 |
195ml |
AD=100, d=70, h=85 |
2.5 bar |
1 piece/box |
| 243903601 | 250ml vacuum reaction flask, DN60 |
315ml |
AD=100, d=70, h=125 |
2.5 bar |
1 piece/box |
| 243904409 | 500ml vacuum reaction flask, DN100 |
740ml |
AD=138, d=106, h=120 |
1.5 bar |
1 piece/box |
| 243905405 | 1000ml vacuum reaction flask, DN100 |
1395ml |
AD=138, d=106, h=205 |
1.5 bar |
1 piece/box |
| 243906307 | 2000ml vacuum reaction flask, DN100 |
2620ml |
AD=138, d=140, h=270 |
1.5 bar |
1 piece/box |
| 243907106 | 4000ml vacuum reaction flask, DN150 |
5765ml |
AD=184, d=200, h=290 |
1.0 bar |
1 piece/box |
| 243907603 | 6000ml vacuum reaction flask, DN150 |
7320ml |
AD=184, d=215, h=320 |
1.0 bar |
1 piece/box |
| 243908608 | 10000ml vacuum reaction flask, DN150 |
11935ml |
AD=184, d=240, h=410 |
0.5 bar |
1 piece/box |
Duran® Flat Flange Round Bottomed Vessel
● Made of borosilicate glass 3.3, used as a reaction vessel under special pressure or/and high temperature.
● The bottle mouth is a flat flange interface with a groove, and an O-ring can be placed in the groove.
● The bottom is spherical.
● Due to the wall thickness and geometric shape, it has pressure and vacuum resistance.
● A durable white printed label made by firing.
Product list:
| Product code | Product description | Total volume | Dimensions (mm) | Pressure resistance at 250℃ |
Packaging |
| 243956303 | 2000ml round bottom vacuum reaction flask, DN100 |
2610ml |
AD=138, d=165, h=215 |
1.0 bar |
1 piece/box |
| 243957102 | 4000ml round bottom vacuum reaction flask, DN150 |
4660ml |
AD=138, d=206, h=265 |
1.0 bar |
1 piece/box |
| 243957608 | 6000ml round bottom vacuum reaction flask, DN150 |
6675ml |
AD=138, d=236, h=295 |
1.0 bar |
1 piece/box |
| 243958604 | 10000ml Round-bottom vacuum reaction flask, DN100 |
11720ml |
AD=138, d=280, h=340 |
0.5 bar |
1 piece/box |
| 243959103 | 20000ml Round-bottom vacuum reaction flask, DN100 |
21415ml |
AD=138, d=350, h=410 |
0.5 bar |
1 piece/box |
| 243977301 | 5000ml Round-bottom vacuum reaction flask, DN120 |
- |
AD=158, d=223, h=270 |
- |
1 piece/box |
| 243998608 | 10000ml Round-bottom vacuum reaction flask, DN150 |
- |
AD=184, d=280, h=340 |
- |
1 piece/box |
| 343999107 | 20000ml Round-bottom vacuum reaction flask, DN150 |
- |
AD=184, d=350, h=410 |
- |
1 piece/box |
Duran® Flat Flange Vacuum Reaction Beaker
● Made of borosilicate glass 3.3, used as a reaction vessel under special pressure or/and high temperature.
● The bottle mouth has a flat flange interface with a groove where an O-ring can be placed.
● The overall shape is cylindrical with a flat bottom.
● Due to the wall thickness and geometric shape, it has pressure and vacuum resistance.
● Durable white printed labels fired on.
Product list:
| Product code | Product description | Total volume | Dimensions (mm) | Pressure resistance at 250℃ |
Packaging |
| 243945409 | 1000ml Flat-bottom vacuum reaction flask, DN120 |
1360ml |
AD=158, d=130, h=125 |
0.5 bar |
1 piece/box |
| 243946302 | 2000ml flat-bottom vacuum reaction flask, DN120 |
2200ml |
AD=158, d=130, h=200 |
0.5 bar |
1 piece/box |
| 243946808 | 3000ml flat-bottom vacuum reaction flask, DN120 |
3200ml |
AD=158, d=130, h=290 |
0.5 bar |
1 piece/box |
| 243915406 | 1000ml flat-bottom vacuum reaction flask, DN150 |
1915ml |
AD=184, d=159, h=120 |
0.5 bar |
1 piece/box |
| 243916308 | 2000ml flat-bottom vacuum reaction flask, DN150 |
3070ml |
AD=184, d=153, h=200 |
0.5 bar |
1 piece/box |
| 243916805 | 3000ml flat-bottom vacuum reaction flask, DN150 |
4090ml |
AD=184, d=153, h=265 |
0.5 bar |
1 piece/box |
Duran® Flat Flange Lid
● Made of borosilicate glass 3.3, used as a lid for vacuum reaction vessels.
● There are 4 ground glass joints on the lid. The middle ground glass joint is larger, and the 3 ground glass joints on the side necks open obliquely upwards.
● Thick-walled, pressure-resistant, and high-temperature-resistant.
Product list:
| Product code | Product description | Middle neck ground glass joint |
Side neck ground glass joint | Dimensions (mm) |
Pressure resistance at 250℃ |
Packaging |
| 243923406 | Flat flange cover, DN60 |
29/32 |
Two 19/26, one 14/23 |
h=90, AD=100 |
2 bar | One per box |
Duran® Flat Flange Lid
● Made of borosilicate glass 3.3, used as the cover for vacuum reaction vessels.
● There are 4 ground glass joints on the cover. The 4 joints are the same size. The 3 joints on the side neck open straight upwards.
● Thick-walled, pressure-resistant, and high-temperature-resistant.
Product list:
| Product code | Product description | Middle neck ground glass joint |
Side neck ground glass joint | Dimensions (mm) |
Pressure resistance at 250℃ |
Packaging |
| 243925707 | Flat flange cover, DN150 |
29/32 |
Three 29/32 |
h=130, AD=184 |
1 bar | One per box |
Duran® Flat Flange Lid
● Made of borosilicate glass 3.3, used as the cover for vacuum reaction vessels.
● There are 4 ground glass joints on the cover. The 4 joints are the same size. The 3 joints on the side neck open obliquely upwards.
● Thick-walled, pressure-resistant, and high-temperature-resistant.
Product list:
| Product code | Product description | Middle neck ground glass joint |
Side neck ground glass joint | Dimensions (mm) |
Pressure resistance at 250℃ |
Packaging |
| 243924608 | Flat flange cover, DN100 |
29/32 |
Three 29/32 |
h=125, AD=138 |
1 bar | One per box |
| 243925801 | Flat flange cover, DN150 |
29/32 |
Three 29/32 |
h=130, AD=184 |
1 bar | 1 piece/box |
Duran® Stainless Steel Quick Release Clamp
● Used to firmly clamp the Duran® flat flange vacuum reaction vessel and the lid together to prevent the joint from accidentally opening.
● Easy to adjust the tightness, can be quickly fixed and removed.
Product list:
| Article number | Product description | Packaging |
| 290713407 | Stainless steel quick release clamp, DN60 | 1 piece/package |
| 290714609 | Stainless steel quick release clamp, DN100 | 1 piece/package |
| 290715108 | Stainless steel quick release clamp, DN120 | 1 piece/package |
| 290715708 | Stainless steel quick release clamp, DN150 | 1 piece/package |
| 290716104 | Stainless steel quick release clamp, DN200 | 1 piece/package |
Duran® Chrome-nickel steel clamp for vacuum reaction flasks Holding Device for Reaction Vessels
● Used to firmly clamp the Duran® flat flange vacuum reaction vessel and the lid together to prevent the joint from accidentally opening.
● Made of chrome-nickel steel, uses two clamping rods to fix the lid and the reaction vessel.
Product list:
| Article number | Product description | Packaging |
| 290734602 | Clamp for vacuum reaction vessel, DN100 | 1 piece/package |
| 290735701 | Clamp for vacuum reaction vessel, DN150 | 1 piece/package |
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